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Nikon D810A vs Pentax K-S1

Portability
55
Imaging
75
Features
80
Overall
77
Nikon D810A front
 
Pentax K-S1 front
Portability
69
Imaging
63
Features
70
Overall
65

Nikon D810A vs Pentax K-S1 Key Specs

Nikon D810A
(Full Review)
  • 36MP - Full frame Sensor
  • 3.2" Fixed Display
  • ISO 200 - 12800 (Boost to 51200)
  • 1/8000s Max Shutter
  • 1920 x 1080 video
  • Nikon F Mount
  • 880g - 146 x 123 x 82mm
  • Announced February 2015
Pentax K-S1
(Full Review)
  • 20MP - APS-C Sensor
  • 3" Fixed Screen
  • ISO 100 - 51200
  • Sensor based Image Stabilization
  • No Anti-Alias Filter
  • 1/6000s Max Shutter
  • 1920 x 1080 video
  • Pentax KAF2 Mount
  • 558g - 121 x 93 x 70mm
  • Revealed August 2014
  • Renewed by Pentax K-S2
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Nikon D810A vs Pentax K-S1 Overview

Here is a complete comparison of the Nikon D810A and Pentax K-S1, both Advanced DSLR cameras by companies Nikon and Pentax. There exists a huge gap among the image resolutions of the D810A (36MP) and K-S1 (20MP) and the D810A (Full frame) and K-S1 (APS-C) enjoy different sensor sizes.

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The D810A was brought out 6 months later than the K-S1 which means that they are both of a similar generation. The two cameras come with the identical body type (Mid-size SLR).

Before delving in to a comprehensive comparison, below is a short introduction of how the D810A grades versus the K-S1 for portability, imaging, features and an overall rating.

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Reasons to pick Nikon D810A over the Pentax K-S1

 D810A K-S1 
Screen dimension3.2"3"Bigger screen (+0.2")
Screen resolution1229k921kClearer screen (+308k dot)

Reasons to pick Pentax K-S1 over the Nikon D810A

 K-S1 D810A 

Common features in the Nikon D810A and Pentax K-S1

 D810A K-S1 
RevealedFebruary 2015August 2014Same generation
Manual focus More exact focusing
Screen typeFixed Fixed Fixed screen
Selfie screen Lacking selfie screen
Touch friendly screen Neither provides Touch friendly screen

Nikon D810A vs Pentax K-S1 Physical Comparison

If you're looking to carry your camera regularly, you are going to need to consider its weight and proportions. The Nikon D810A provides exterior dimensions of 146mm x 123mm x 82mm (5.7" x 4.8" x 3.2") and a weight of 880 grams (1.94 lbs) and the Pentax K-S1 has measurements of 121mm x 93mm x 70mm (4.8" x 3.7" x 2.8") with a weight of 558 grams (1.23 lbs).

Check out the Nikon D810A and Pentax K-S1 in the latest Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Keep in mind, the weight of an Interchangeable Lens Camera will vary based on the lens you are utilising at the time. Below is the front view over all size comparison of the D810A compared to the K-S1.

Nikon D810A vs Pentax K-S1 size comparison

Taking into account dimensions and weight, the portability score of the D810A and K-S1 is 55 and 69 respectively.

Nikon D810A vs Pentax K-S1 top view buttons comparison

Nikon D810A vs Pentax K-S1 Sensor Comparison

More often than not, it is difficult to picture the gap in sensor sizing just by researching a spec sheet. The graphic below should offer you a much better sense of the sensor sizes in the D810A and K-S1.

Clearly, both of these cameras have got different megapixels and different sensor sizing. The D810A featuring a bigger sensor is going to make shooting bokeh less difficult and the Nikon D810A will render more detail having its extra 16 Megapixels. Higher resolution will also allow you to crop photographs much more aggressively.

Nikon D810A vs Pentax K-S1 sensor size comparison

Nikon D810A vs Pentax K-S1 Screen and ViewFinder

Nikon D810A vs Pentax K-S1 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Nikon D810A as a Portrait photography camera
Pentax K-S1 as a Portrait photography camera
85
you can focus manually
megapixel count fantastic (36 megapixels)
sensor size is great (Full frame)
provides face detection autofocus
delivers RAW formats
77
has manual focus
resolution is good (20MP)
sensor size is nice (APS-C)
supports face detection autofocus
exports RAW formats
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Street Comparison

Nikon D810A as a Street photography camera
Pentax K-S1 as a Street photography camera
60
sensor size is great (Full frame)
delivers RAW formats
environment proof
screen is fixed
lack of image stabilization
73
image stabilization (Sensor based)
sensor size is nice (APS-C)
exports RAW formats
lighter than competition (558g)
great ISO range (51,200)
fixed screen
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Sports Comparison

Nikon D810A Sports photography information
Pentax K-S1 Sports photography information
76
high shutter speed (1/8,000 seconds)
megapixel count fantastic (36 megapixels)
sensor size is great (Full frame)
provides tracking autofocus
environment proof
great battery life (1,200 shots)
comes with phase detect autofocus
max fps low (5.0 fps)
lack of image stabilization
69
high shutter speed (1/6,000 seconds)
image stabilization (Sensor based)
resolution is good (20 megapixels)
sensor size is nice (APS-C)
supports tracking autofocus
sensor has phase detect autofocus
continuous shooting slow (5.4 fps)
not so great battery power (410 shots)
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Travel Comparison

Travel photography with Nikon D810A
Travel photography with Pentax K-S1
69
great battery life (1,200 shots)
environment proof
megapixel count fantastic (36 megapixels)
flash built-in
does not contain selfie friendly screen
60
lighter than competition (558 grams)
resolution is good (20MP)
built-in flash
lack of Time Lapse recording
not so great battery power (410 shots)
display is not selfie friendly
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Landscape Comparison

Nikon D810A as a Landscape photography camera
Pentax K-S1 as a Landscape photography camera
80
you can focus manually
swap lenses (Nikon F mount)
screen is a decent size (3.2 inches)
megapixel count fantastic (36 megapixels)
sensor size is great (Full frame)
delivers RAW formats
environment proof
great battery life (1,200 CIPA)
has dual storage slots
lack of image stabilization
73
has manual focus
interchangeable lenses (Pentax KAF2 mount)
good sized screen (3 inches)
image stabilization (Sensor based)
resolution is good (20MP)
sensor size is nice (APS-C)
no anti aliasing filter
great ISO range (51,200)
exports RAW formats
not so great battery power (410 CIPA)
lack of Time Lapse recording
Photography Glossary

Vlogging Comparison

Nikon D810A Vlogging features
Pentax K-S1 Vlogging features
30
provides face detection autofocus
video res high (1920 x 1080 pxls)
does have external microphone jack
does not contain selfie friendly screen
lack of image stabilization
33
image stabilization (Sensor based)
supports face detection autofocus
high video quality (1920 x 1080 pxls)
lighter than competition (558 grams)
display is not selfie friendly
lack of external mic support
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Nikon D810A vs Pentax K-S1 Specifications

Detailed spec comparison table for Nikon D810A and Pentax K-S1
 Nikon D810APentax K-S1
General Information
Make Nikon Pentax
Model type Nikon D810A Pentax K-S1
Class Advanced DSLR Advanced DSLR
Announced 2015-02-10 2014-08-27
Physical type Mid-size SLR Mid-size SLR
Sensor Information
Powered by EXPEED 4 Prime MII
Sensor type CMOS CMOS
Sensor size Full frame APS-C
Sensor dimensions 35.9 x 24mm 23.5 x 15.6mm
Sensor surface area 861.6mm² 366.6mm²
Sensor resolution 36MP 20MP
Anti alias filter
Aspect ratio 5:4 and 3:2 3:2
Maximum resolution 7360 x 4912 5472 x 3648
Maximum native ISO 12800 51200
Maximum boosted ISO 51200 -
Lowest native ISO 200 100
RAW support
Lowest boosted ISO 100 -
Autofocusing
Focus manually
Touch focus
Continuous AF
AF single
Tracking AF
AF selectice
Center weighted AF
AF multi area
Live view AF
Face detect focusing
Contract detect focusing
Phase detect focusing
Total focus points 51 11
Cross type focus points 15 -
Lens
Lens mount type Nikon F Pentax KAF2
Number of lenses 309 151
Crop factor 1 1.5
Screen
Display type Fixed Type Fixed Type
Display size 3.2 inch 3 inch
Display resolution 1,229k dots 921k dots
Selfie friendly
Liveview
Touch screen
Viewfinder Information
Viewfinder Optical (pentaprism) Optical (pentaprism)
Viewfinder coverage 100 percent 100 percent
Viewfinder magnification 0.7x 0.64x
Features
Lowest shutter speed 30s 30s
Highest shutter speed 1/8000s 1/6000s
Continuous shooting rate 5.0 frames per sec 5.4 frames per sec
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Set WB
Image stabilization
Built-in flash
Flash distance 12.00 m (at ISO 100) 10.00 m (at ISO 100)
Flash modes Front-curtain sync, slow sync, rear-curtain sync, redeye reduction, redeye reduction w/slow sync, slow rear-curtain sync Auto, auto + redeye, on, on + redeye reduction, slow sync, trailing curtain sync, manual
External flash
AE bracketing
White balance bracketing
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Video resolutions 1920 x 1080 (60p, 50p, 30p, 25p, 24p), 1280 x 720 (60p, 50p) 1920 x 1080 (30,25,24 fps), 1280 x 720 (60,50 fps)
Maximum video resolution 1920x1080 1920x1080
Video file format MPEG-4, H.264 H.264
Mic support
Headphone support
Connectivity
Wireless Optional Eye-Fi Connected
Bluetooth
NFC
HDMI
USB USB 3.0 (5 GBit/sec) USB 2.0 (480 Mbit/sec)
GPS Optional Optional
Physical
Environment sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 880g (1.94 pounds) 558g (1.23 pounds)
Dimensions 146 x 123 x 82mm (5.7" x 4.8" x 3.2") 121 x 93 x 70mm (4.8" x 3.7" x 2.8")
DXO scores
DXO All around rating not tested 78
DXO Color Depth rating not tested 23.5
DXO Dynamic range rating not tested 13.0
DXO Low light rating not tested 1061
Other
Battery life 1200 images 410 images
Battery style Battery Pack Battery Pack
Battery ID EN-EL15 D-LI109
Self timer Yes (2, 5, 10, 20 secs for up to 9 shots) Yes ( 2 or 12 seconds)
Time lapse shooting
Type of storage SD/SDHC/SDXC, CompactFlash (UDMA compliant) SD/SDHC/SDXC
Card slots Two One
Pricing at launch $3,800 $339